Gas-producer.



K. J. SUNDSTROM.

, GAS PRODUCER. APPLIoA'rIolf FILED snr'r. 19, 1910.

Patented Apr. 18, 191.1.

, www4/- @Mommy KARL J'. SUNDSTBQM, 0F DETROIT, MICHIGAN.

Gas-PRODUCER.

Sp'ecieation of Letters Patent.

Patented Apr. 1 8, 1911.

Anplication 4111er! September" 19, 1910. Serial No; 532,601V

To all 'whom it may concern:

Be it known that I, KARL J. SUNDSTROM, a citizen of tlie' United States,residin at Detroit, in the county of Wayne and tate of Michigan, haveinvented certain new and useful Improvements in Gas-Producers, ofVWhic'h'the following is a specification.I

In the 4'operating of gas producers, it is found that the varlationinthe quantity and quality of the gasproducedis caused to a greatextentby the formation of clinkers in the fuel bed, which clinkers cause-airpassages to form through the bedgand-it is therefore 'an object of thisinvention to. prevent the formation of clinkers by providing means forconstantly stirring the l-owerpart o f the fuel bed orresidue of thefuel.

A further object of the invention is t0 provide means for maintaining aneven,'uni form fuel bed at a certain. height, to further insure theproduction of gas of uniform quality'byautomatically feeding a regulatedquantity of coal into the' producer and providing means for removing theash. and residue 'from the bottom-of the producer in exact proportion tothe amount of coal fed 1n.

It is also an object of the invention to provide a construction` whichis especially adapted to deliverl a continuous even flow of gas 4of auniform quality and temperature directly to a furnace. for consumptiontherein, .and to provide certain new and useful features in theconstruction and arranges, mentof parts all as hereinafter more fullydescribed, reference being'had to the accompaxying drawing in Wh1chgu're1 is a vertical section .on the line of Fig. 2 through a gas producer-embo dying the invention; Fig. 2 is a horizontal section of the sameonthe line of Fig..-

l,`and Fig. 3 is an enlarged detail of a rotatable cap.

As shown in the drawing, the body 1 of the producer' is yconstructed offire brick in the usual mannerandforms a combustion .chamber 2 from theupper end of which leads a gas Adischarge pipe 3. A bottom 4 is providedfor the lire chamber upon which the bed of v fuel is supported. 'Withinsaid chamber and ,opening through the wall of the fire chamber is aseries of holes 5 adjacent to the bottom 4 through' which clinkers orother residue from the fuel may be'removed. A supply pipe Gfor air underpressure, or air and steam, extends through the wallof the producer intotheash pit 7 below the bottom i and is provided with anenlarged head ortwyer pipe- 8 extending u ward througlrthe bottom 4 in the axis of t efire chamber. The open upper end of this pipe 8 is partially lclosed bymeans of a conical hood 9 which is fixed to the upper end of the pipe 8and is formed With vits apex. A series of small openings lOare providedin the upper endlof the'twyer pipe an opening at beneath the hood topermit the escape of air laterally beneath said hood. 1. A- verticalshaft 11 extends in the axisof thetwyer pipe and upward through theopening in the -top of thehood Where it is provided uponl its upper endwith a conical cap 12 secured thereto to-tuin therewith, said cap beingspaced a short distance from theL hood 9 to permit the escape of airbetween, into the ed of fuel above.l Said cap 'and hoodbv theirarrangement over the upper end of the twyer pipe prevent the ash andresidue from the fuel from -entering said pipe.

In the bottom 4 around the twyer pipe 1s a series of concentricdischarge openings 13 through which the residue of fuel falls into theash pit below. On the cap 12 is a laterally extending fixed arm 11 whichis bent downward at one side of the hood 9 and `provided at its lowerend with a sweep- 15,

extending in a horizontal position adjacent to the bottomfl1 and in anangular posit-ion relative to its radially extending .supporting arm14,'. The inner end-of the-sweep pro jects beneath theedgebf the hoofdandover the openings 13 in the bottom so that when' theshaft 11isturned, revolving Ithe cap 12 andA carrying the sweep around .thetivyer ine said sxvee will move the ash and residue resting upon thebottom, inward beneath the hood Where vit- Will drop through the.v

openings.' Theremoval of ash isthus' regulated by the speed at which theshaft is turned 'and the movement of the arml 11 through the bed of ashand fuel around the twyer pipe Will-,keep said bed constantly agitatedand preventthe formation/of clin'kers axis of the magazine and extendingoutward through the top thereof. Coal 1s supplied to the magazinethrough a .pipe 22 and the shaft 21 is turned by means of a bev- A1lieled gear 23 secured thereon inmesh with a beveled pinion upon a driveshaft 24 whichis driven in any suitable manner, as by a pul1eyi-v`25"-aecu1'ed thereon.

It isdesirable that the, quantity of ash removed frointhe bottom of thefuel bed be .in proportion to the amount of fuel fed in, 'in order thatthe fuel may be maintained at acert'ain levelz and the shaft 11 istherefore 'preferablydrlven from the4 'same 4'driving shaft- 24'whichactuates the coal feed. Mo-

tion is transmitted from the shaft 24wto a.

shaft 26gextending horizontally into the ash 7, by'any suitable meanssuch as a,

rocket chain 27, and a pinion on the inner end of said shaft 26' engagesa gear 28 on tiltilefltower end of the shaft 11 to turn said A regulateddischarge of ash which va. ries in proportion to the fuel fed in, ismaintained an. 4the fuel bed continuously agi- ';-I-'='f"tated, thusefectually preventing the foratioi o f clinkers and making it possibleto a ow even ow of gas of uniform quantity quality. 'The continuous feedand constent discharge. of ash also permits of the il'naintaalining of.a shallow bed of fuel of uniform density, and thus a ve consumptionAwithin a boiler furnace to which itis directly delivered fromtheproducer. A

Havin thus fully described my invention whatIcaims 1. In agas the bottomof said chamber, a mem er rotatable about the twyer,` and means withinthe twyer for rotating said member.,

2. In a gas producer, the combination lwith a combustion chamber, of atwyer extending vertically upward -within the lower end'of saidchamber,a shaft extending vertically through said twyer, andan arm on the upperend of the shaft rotatable-there v 3. I1! a gas producer, thecombination with a combustion chamber, of a twyer pipe de of coal andsecure therefrom hot gas may be produced which is especia y adapted for"36 producer the combination with a combustionchamber, of atwyer ipe inextending upward Within the bottom of said chamber and having lateralopenings near its upper end, a conical hoodupon the upper end of saidpipe, a vertical shaft in the axis of said pipe extending upward throughsaid hood, a c ap secured upon the upper end of said shaft, and meansfor turnlng the shaft.

4. In a gas producer the combination with a combustion chamber, of abottom for said chamber having discharge openings, a twyer pipeextending upward through the bottom` a shaft in the axis of said pipe,an

arm secured to the upper end of the shaft and extending laterallytherefrom, a sweep secured to the shaft to sweep the-ash upon saidbottom Athrough said openings, and.

means for actuating the shaft.

5. In a gas ,producerl the combination of a combustion chamber. a twyerpipe extending upward Within the bottom of said chamber, a conical hoodsecured to the upper end of said pipe and formed with an opening'at itsapex, a shaft within the pipe extending through the opening in the hood,a conical cap on the up er end of the shaft spaced from the hoo an armon the capLand rmeans for turning the shaft.

6. In a gas producer the combination with a' combustion chamber, of abottom for said chamber, a twyer pipe extending upward through saidbottom, said bottom being provided with a series of openings around saidY pipe, a conical hpod secured to .the upper end of said pipe, ayvertical shaft in the axis -of said pipe extending through the hood,

a conical cap secured to the upper end of the shaft and4 spaced from thehood, an arm on the cap extendingV laterally therefrom and provided witha downwardly extending outer end, a sweep on the lower end of said armadjacent to said bottom and extending Aat an angle to the radiallyextending portion'of said arm with its inn'er end projecting beneathsaid hood and sweepingV the openings in said bottom, andmmeans forturning said shaft.

signature in presence of two witnesses. y KARL J. SUNDSTROM.

`I-Vitnesses':

Lewis E. FLANDERS, SHERMAN D. CALLENDER.

i roo. In testimony whereof I havefafiixed my f

